Combination stove



Jan. 15, 1935.

LI HvCTJEJJ Patented 'Jan. '15, 1935 PATENTTVOFFICE v 1.9aa.z:s v

COMBINATION STOVE James H. Coplen, Rnssiavllle, Ind.

Application January 25, 1933, Serial No. 653,536

. Renewed December 13, 1934 4 Claims. (CL 126-31) This invention relates to an improvement in combination stoves, wherein the stove is fully and completely serviceable for ordinary cooking purposes and is additionally andv selectively '5 serviceable for the heating of a suflicient quantity of water to serve as a heating agent for the rooms in ahouse. I

The primary object of the present invention is the provisionof a stove at a heating water reservoir provided with means under the control of the user, whereby the stove may be utilized as a cooking stove to the substantial exclusion of its waters heating function; utilized-for the maximum heating effect 'of the water in the water reservoir; or utilized for a minimum heating eifect of the water in the water reservoir, the

latter capability permitting the heating agent for the house to be maintained substantially at a constant temperature.

The stove as constructed involves a heating stove of more or less conventional construction, including an oven arranged in rear of the firepot, and a water reservoir having the usual outlet and inlet connections from the radiators,

with the reservoir arranged in rear of the oven, there being included in the construction certain conduits for the passage of the gases of combustion, and controls for these conduits so that the gases of combustion may be directed from the 0 firepot, about the oven, and through the flue; from the firepot beneath and in heating contact with the bottom of the water reservoir, to and beneath the oven, and to the flue or from the flrepot to and through the heating pipes in the 35 reservoir and out through the flue.

In the first position, the oven isJieated; while the water in the heating water reservoir is substantially without heat as, for example, desirable in the summertime, In the second"posi-.

40 tion, the water in the reservoir is maintained at a relatively low temperature, though appreciably heated ior circulation through the radiators in order that' the heat in the house or other points of use may be maintained at a sub- 45 stantial minimum. In the third position, the water of the heating water reservoir is heated to the maximum,- for circulation through the radiators. I

The invention is illustrated in the accompany- 50 ing drawing, wherein:

Figure 1 is a vertical sectional view, partly in elevation, showing the stove constructed in accordance with the invention.

Figure 2 is a section on the line 2-2 of Fig- 65 ure 1.

The improved stove comprises a stove body or shell constructed of any conventional or desired form or' outline, except in the particulars here,- inafter described. This shell 1 is formed at the forward portion with an upstanding partition 2 5 spaced from the forward wall! and defining a chamber for the reception .of the grate or firepot I 4, which may be; of any conventional form. The usual ash receiver 5 is slldably supported below the flrepot.

The partition 2 terminates short of the upper wall 8 of the shell, defining a combustion conduit 7 in open communication with the space above the firepot and extending for the full width ofthe shell, the lower boundary of the 15 conduit being provided by a wall 8 extending rearwardly from the upper end of the partition 2 and parallel to the upper wall or top 6 of the stove proper.

An appropriate distance in rear of the parti- '20 tion 2, the wall 8 is connected with a depending wall 9 terminating short of the bottom 10 of the shell 1, this wall 9 providing a support for an oven structure 11. This oven 11, while supported from the wall 9, is otherwise spaced from 25 the partition 2, wall 8 and bottom 10 of the shell. One end wall of the oven, as 12, is spaced from the rear wall 13 of the shell, the opposite end of the oven being connected to the forward wall 14 of the shell and provided with the usual .doors 15 to permit access to the interior of the oven.

Beyond the wall 9, the interior of the shell is provided with a spaced, parallel wall 16 defining with the wall 9 a combustion conduit 1'7 which opens through the upper end into the conduit 7 and at the lower end into the conduit 18 beneath and leading around the oven. The upper end of the walllfi is provided with a horizontal wall 19 extending in alignment with the wall 18 and connected to the walls 13 and 14 of the shell, this wall 19 forming with the upper wall 6 a conduit 20 which is a continuation of the conduit 7. The rear wall of the shell 1 is preferably formed as a downwardly and forwardly inclined wall 21, and arranged within the shell is a wall 22 disposed in spaced, substantially parallel relation to thewall-21 and providing a combustion conduit 23 which communicates at its upper end with the rear end of the conduit 20 and at its lower end with the conduit 18.

Secured to the rear portion of the top of the stove is a heating water reservoir 24 provided with heating flues 25, the waterspac'e of the reservoir having pipe connection at 26 and 27 with-the radiators or other heating unit. The

shell of the reservoir is extended rearwardly beyond the water space and downwardly as a part of or secured to the stove top, providing a combustion conduit 28 into which one end of the fiues 25 opens, the lower end of this conduit being -in open communication with the combustion conduit 20 of the stove and the conduit being otherwise closed. The flues at the opposite end open into a conduit 29 forming or connected to the chimney or other final escape for the products of combustion. This pipe 29 is connected by an independent tube-like conduit 30 which opens at its lower end into the conduit 18 about centrally of the width of the oven, as at 31, and at its upper end into the conduit 29 above the uppermost flue 25, as at 32.

As thus defined, there is a conduit for the products of combustion leading about the oven beneath the water reservoir and vertically at one end of said reservoir. Manually controlled dampers are provided 'to govern the path of travel of the products of combustion through the control of these respective conduits. One damper, as 33, is pivotally supported on the upper end of the wall 16 and operated from the outside of the stove by any appropriate means (not shown) and may be moved vertically, as indicated in dotted lines in Figure 1 to a position against the stop 34 to thereby close the conduit 20 against, the conduit l. With the damper 33 in this position, the conduit 7 is open to the conduit 17. The damper 33, however, may be manipulated so as to close the upper end of the conduit 17, and in this position said conduit 17 is closed against the conduit '7, while the conduit 20 is freely open to the conduit 7.

A second damper 35 is pivotally supported at the upper end of the rear 'wall 21 of the stove body, this damper being movable to a'position to bridge the conduit 20 to cut off the flue 28 from the conduit 20 and open the conduit 23 to such conduit 20, as shown in dotted lines in Figure 1. Such damper 35 may be moved into the position shown in full lines in Figure 1 to open the conduit 28 to the conduit 20 and close the conduit 23 against the conduit 20.

Thus, with proper manipulation of the two dampers 33 and 35, the advantages of the stove for cooking or other culinary purposes without heating the heating water, or the use of such stove while maintaining the heating water at a minimum, or the use of such stove for the maximum heating of the heating water, can be readily carried out in the following mannerz-Assume it is desired to use the stove for cooking purposes without appreciably heating the water for heating purposes. the damper 33 may be turned to the position indicated in dotted lines in Figure 1. In this position, the products of combustion will pass from the firepot, through the conduit 7 and down the conduit 17 and beneath and, of course, more or less around the oven 11 and through the tubular conduit 30 to the escape flue or chimney. It will be noted that in this position of the damper, the water in the reservoir is practically without a heating agent and may be considered as entirely unheated.

If it is desired to utilize the heating stove and oven and at the sametime heat the water in the water reservoir sufficient for circulating purposes but without marked heating effect in the rooms to be heated, the damper 33 is moved to the position indicated in full lines in Figure 1,

while the damper 35 is moved to the. position indicated in dotted lines in that figure. The products of combustion then pass through the conduits .7, 20, 23 and 18 and around the oven more or less and out the conduit 30. In this position of the parts, the heating water will be maintained at a low temperature, and while aifording some degree of heat in the places to be heated, will naturally be without marked heating efl'ect.

If the maximum heating effect from the water heating system during the use of the stove is desired, the damper 33 is turned to the position indicated in full lines in Figure 1, while the damper 35 is also turned to the position indicated in fu1l lines in Figure 1. The products of combustion will now pass through the conduits '7, 20 and 28, passing thence through the fines 25 and into the escape flue. Under these conditions, the water in the water reservoir is given the maximum heat capable from the products of combustion and hence the heating units in the house render their most eflicient service for heating purposes. If, during this condition, the heat developed is undesirable, it may be quickly reduced by again shifting the damper 35 to the position indicated in dotted lines in Figure 1, which will permit the products of combustion to affect only the bottom of the water reservoir, thus gradually reducing the maximum heat of such water to the degree permitted by the heat from the products of combustion under these conditions.

While not vitally necessary, it is deemed advisable to provide a damper 36 at the communication of the conduit 30 with the flue space 29 in order that when the conduit 30 is in use as the medium for the escape of the products of combustion, the escape flue 29 below the damper that is within range of the flues 25 will be entirely cut 011.

It is, .of course, appreciated that a' very large proportion of the heat units and the products of combustion are lost in their escape up the chimney, and this invention provides for their utilization when desired in heating water for heat ing or other purposes well beyond the area in which the stove proper is located. This heating effect of the water reservoir is gained with practically no additional expense in fuel over that required for the use of the stove as a heatin stove and, therefore, the invention provides a stove having the maximum economy in fuel consumption for the results attained, permits the use of but a single stove in the residence for both cooking and heating purposes, and does not interfere in any way with the normal cooking function, of the stove or any other culinary purposes for which such stove may be designed.

It is, of course, to be understood that the character of the stove proper, the size of the various parts, the material of which the stove is made, and the utilization of other details of the stove for other purposes form no particular part of the present invention, and all and every possible variation over that illustrated and specifically described herein are contemplated as within the spirit of this invention.

I claim:---

1. A stove having a firepot at the forward end, an upper conduit extending longitudinally of the stove, a flue-formed water reservoir overlying said conduit, an oven, a conduit underlying the oven, a vertical conduit establishing communication betweenthe upper conduit and the conduit below the oven, an end conduit at the stove communicating with the upper conduit and with the conduit below the oven, a damper arranged at the communication between the vertical conduit and upper conduit and operative to close the vertical conduit against the upper conduit in one position or to open the vertical conduit to a portion of the upper conduit in another position, and a second damper arranged at the end of the upper conduit and operable to close the upper conduit against the end conduit or to open the end conduit to the upper conduit.

2. A stove including a body, a firepot at one end, an oven arranged in rear of the firepot, an upper combustion conduit underlying the top of the stove, a lower conduit beneath the oven, a vertical conduit at the rear end the oven and establishing communication between the upper and lower conduits, an end pipe establishing communication between the end 01 the upper conduit and the lower conduit, a flue-formed reservoir supported on the top of the stove beyond the plane of the oven, conduits at the respective ends of the reservoir open to the flues, the conduit at one end being substantially aligned with the upper portion of the juncture of the upper and end conduits of the stove, a damper movable to a position to close the upper end of the vertical conduit and thereby cut of! its communication with the upper conduit or to a position to bridge the upper conduit beyond the vertical conduit to thereby open the vertical conduit to the forward portion of the upper conduit, and

- .a second damper arranged at the upper end of the end conduit and movable to a position to close the upper end of the end conduit against the upper conduit to. thereby open the flue conduits to said upper conduit .or to close the upper conduit against the flue conduits to thereby open the upper conduit to the end conduit.

and establishing communication between the upper and lower conduits, an end conduit establishing communication between the end of the upper conduit and the lower conduit, a flueformed reservoir supported on the top of the stove beyond the plane of the oven, conduits at the respective ends of the reservoir open to the flues, the conduit at one end being substantially aligned with the upper portion of the juncture of the upper and end conduits of the stove, a damper movable to a position to close the upper end of the vertical conduit and thereby cut off its communication with the upper conduit or to a position to bridge the upper conduit beyond the vertical conduit to thereby open the vertical conduit to the forward portion of the upper conduit, a second damper arranged at the upper end of the end conduit and movable to a position to close the upper end of the endconduit against the upper conduit to thereby open the flue conduits to said upper conduit or to close the upper conduit against the flue conduits to thereby open the upper conduit to the end conduit, and an escape conduit opening into the lower conduit above the vent and into one of the flue conduits above the flues in the reservoir.

4. A stove having an oven, a fire pot, a water heating reservoir formed with tubes for the passage of the heating medium, a conduit leading from the fire pot area and directly beneath the water reservoir, a second conduit communicating with the first conduit and leading around the oven, a third conduit leading from the end oi the first conduit remote from the fire pot and communicating with the second conduit below the oven, a fourth conduit leading from the end of the first conduit remote from the fire pot and communicating with the tubes of the water reservoir, a damper directing the products of combustion either along the first conduit or through the second conduit, and a second damper controlling the admission of theproducts 01' combustion either to the fourth conduit or the third conduit.

JAMES H. COPLEN. 

